Whiskey is pretty but you should still keep the bag that goes best with your wardrobe. It didn't work with mine and I couldn't see paying that much money for a bag just to look at it.
I have the Brun & I love it. I'm the type of person who like to match my bags to what I'm wearing. If you feel like Brun matches your wardrobe better then that's the bag you should keep. I think in the side by side pic of the bags the Whiskey looks better hands down but you said you had it for months and never wore it. You should pick the bag you think you would wear more often. Are you willing to pay full price for a bag you would wear less or half the price of bag you would wear more often. In the end, the decision is left to you. Let us know what you chose. Good Luck
I think Whiskey is the best color for the Paddy. Why have you not carried it yet? Would the Brun match your wardrobe better? I agree with L_Rod. Go with the one you will USE.